'''Electron nuclear double resonance''' (ENDOR) is a magnetic resonance technique for elucidating the molecular and electronic structure of paramagnetic species.
[Kevan, L and Kispert, L. D. ''Electron Spin Double Resonance Spectroscopy'' Interscience: New York, 1976.]
The technique was first introduced to resolve interactions in electron paramagnetic resonance
[/] [Kurreck, H.; Kirste, B.; Lubitz, W. ''Electron Nuclear Double Resonance Spectroscopy of Radicals in Solution'' VCH Publishers: New York, 1988.]
It is currently practiced in a variety of modalities, mainly in the areas of biophysics
and heterogeneous catalysis